Ulrich Quack

Ulrich Quack chairs the German Antitrust and Competition Practice and co-chairs the German Energy Industry Group. Mr. Quack has practiced both EU and German antitrust, competition and merger control law for nearly 30 years and has advised and represented German and international clients in numerous proceedings before the European Commission and the German Federal Cartel Office, in appeal proceedings before the German and European courts, in private antitrust litigation, and in cartel investigations. His practice encompasses all aspects of EU and German antitrust, competition and merger control law and covers a wide range of industries.

One focus of Mr. Quack’s practice is the energy sector, specifically the natural gas industry. In the energy sector, Mr. Quack advises and represents producers, suppliers and infrastructure operators in particular on German and EU energy regulation and antitrust, competition and merger control law. His long-standing experience in the energy sector dates back to the beginning of the liberalization of the German energy markets in the early 1990s.

Professional Activities

Mr. Quack is a member of the Studienvereinigung Kartellrecht (Antitrust Law Society in Germany).


  • Represented Linde AG on all aspects of EC merger control law in connection with its EUR 12 billion acquisition of the United Kingdom-based BOC Group plc, the largest takeover in Linde’s corporate history and one of the largest foreign transactions ever undertaken by a German company, which was cleared by the European Commission after a Phase I investigation.
  • Represented Linde AG in connection with the subsequent divestitures, including the sale of BOC Gazy to Air Products, the severance of the Asian joint ventures with Air Liquide and the sale of Linde Gas UK to Air Liquide, as well as in relation to various other transactions, including the acquisition of Spectra Gases Inc. from the Dietz family, the sale of BOC Edwards’ component business to CCMP Capital, the sale of BOC EPS to IMA, and the approximately EUR 4 billion sale of KION Group GmbH to Kohlberg Kravis Roberts & Co. and Goldman Sachs Capital Partners.
  • Advising and representing Wintershall in numerous merger control, antitrust, regulatory and litigation matters.
  • Represented TUI AG in EC merger control proceedings with regard to the merger of TUI’s tourism business with First Choice PLC, combining First Choice’s business and the major part of TUI’s tourism activities in a new listed company by the name of TUI Travel PLC. Moreover, Mr. Quack advised and represented TUI AG with regard to the EUR 1.7 billion acquisition of CP Ships, some other acquisition projects and as a third-party intervener before the German Federal Cartel Office in the merger control proceedings regarding the acquisition of LTU by Air Berlin.
  • Represented Deutsche Telekom AG before the European Commission and before the EC Court of First Instance in an appeal against a fine imposed by European Commission decision based on allegations that DTAG had violated Article 82 EC by maintaining a price squeeze between its retail and wholesale prices in the local loop.
  • Represented and advised an international natural gas supplier with regard to antitrust issues in connection with the formation and restructuring of several international joint ventures.
  • Provided antitrust law and regulatory advice to international energy companies with regard to contemplated transactions in Germany and abroad.
  • Provided regulatory advice to an international natural gas supplier on all aspects of German energy regulation, including proceedings before the German Federal Network Agency (Bundesnetzagentur).


  • Ulrich Quack is recommended by the JUVE Handbook consistently since the 2006/2007 edition as a leading lawyer in the field of antitrust law and merger control. Competitors praise him as a "tough opponent in the courtroom" and "one of the most capable antitrust lawyers in Germany". He has been awarded the title of "leading senior partner" since the 2013/2014 edition
  • JUVE Handbuch recommends Ulrich Quack consistently since the 2019/2020 edition for Public Sector: Constitutional and Economic Administrative Law.
  • JUVE Handbook 2020/2021 and 2021/2022 recommends Ulrich Quack for the area of regulated industries: Energy Industry Law.
  • Chambers Europe and Chambers Global (since 2003) also consistently rank Ulrich Quack among the leading lawyers in the field of Competition/European Law in Germany.
  • Legal 500 Germany recommends Ulrich Quack as a leading lawyer in Antitrust (2014 - 2021) (2021: "WilmerHale can field a global team and coordinate merger control filings in multiple jurisdictions"), also in Dispute Resolution - Commercial Disputes (2018-2020) and Regulated Industries/Energy (2014-2018).  
  • Legal 500 Germany 2021 recommends Ulrich Quack for the area of commercial administrative law.
  • Ulrich Quack has been consistently recommended by Handelsblatt Best Lawyers® List since 2009 for the practice areas competition and antitrust, merger control law and regulatory law. In addition, he was named "Lawyer of the Year" for competition and antitrust law (2018) and in for regulation (2019).
  • Ulrich Quack is listed by WirtschaftsWoche 2019 and 2020 as a "Top Lawyer" for antitrust law.
  • Ulrich Quack is recommended by Who's Who Legal for many years in the following legal guides: Competition: Global Leader: Competition (2019 and 2020), National Leader: Germany – Competition (2019 and 2021). He is considered an authority on "market power issues, merger control and vertical and horizontal agreements".
  • Global Competition Review "GCR Litigation of the Year Award 2014" – Representation of Deutsche Bahn AG - rail cartel“
  • Ulrich Quack is listed in the Competition & Antitrust Expert Guide 2020 as "Top Competition and Antitrust Law Expert".

Insights & News


  • Education

    • Second State Exam, Berlin, 1986

    • First State Exam, Freie Universität Berlin, 1983

  • Admissions

    • Berlin

  • Languages

    • English

    • German